Boron recovery from separate of Pauzhetskaya geothermal station based on modified zeolites of Yagodninsky deposit of Kamchatka

2nd International Geothermal Conference, GEOHEAT2018

Belova, T.P.^1 ; Ershova, L.S.^1 ; Ratchina, T.I.^1

Research Geotechnological Center, Far Eastern Branch, Russian Academy of Sciences, Russia^1

关键词: Amino radicals;    Boron recovery;    Chloride ions;    complex use;    Concentration effects;    Modified zeolite;    Sorption capacities;    Sulfate ion;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/249/1/012031/pdf
DOI  :  10.1088/1755-1315/249/1/012031

来源: IOP

【 摘 要 】

Experimental data on boron sorption from separate of Pauzhetskaya geothermal station by sorbents obtaining by directional modification of zeolites surface of Kamchatka Yagodninsky deposit are presented. The modification was carried out with urotropine (ZEO-UB) or mannite (ZEO-MB). It was determined, that sorbent ZEO-MB has better properties in comparison with ZEO-UB. Sulfate-ions concentration does not affect on sorption capacity; chloride-ions concentration effects negligible. The sorbent is selective relative to boric acid due to reaction of mannite-boric acid formation. Sulfate-and chloride-ions greatly influence on H3BO3 chemosorption with ZEO-UB due to reaction of amino radicals salification with amines of urotropine.